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Alborosie
3 years ago
11

What reaction type is 4+22⟶4+22

Chemistry
1 answer:
aivan3 [116]3 years ago
6 0

Answer: CF_{4} + 2Br_{2} \rightarrow CBr_{4} + 2F_{2} is a single replacement reaction.

Explanation:

A chemical reaction in which one element of a compound is replaced by another element is called single replacement reaction.

For example, CF_{4} + 2Br_{2} \rightarrow CBr_{4} + 2F_{2}

Here, fluorine element in the compound CF_{4} is replaced by the element bromine.

Therefore, it is a single replacement reaction.

Thus, we can conclude that CF_{4} + 2Br_{2} \rightarrow CBr_{4} + 2F_{2} is a single replacement reaction.

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Copper has two naturally occurring isotopes. Cu−63 has a mass of 62.939 amu and relative abundance of 69.17%.
fiasKO [112]
The answer is 64.907 amu.

The atomic mass of an element is the average of the atomic masses of its isotopes. The relative abundance of isotopes must be taken into consideration, therefore:
atomic mass of copper = atomic mass of isotope 1 * abundance 1 + atomic mass of isotope 2 * abundance 2

We know:
atomic mass of copper = 63.546 amu
The atomic mass of isotope 1 is: 62.939 amu
The abundance of isotope 1 is: 69.17% = 0.6917
The atomic mass of isotope 1 is: x
The abundance of isotope 2: 100% - 69.17% = 30.83% = 0.3083

Thus:
63.546 amu = 62.939 amu * 0.6917 + x * 0.3083
63.546 <span>amu = 43.535 amu + 0.3083x
</span>⇒ 63.546 amu - 43.535 amu = 0.3083x
⇒ 20.011 amu = 0.3083x
   ⇒ x = 20.011 amu ÷ 0.3083 = 64.907 amu
7 0
4 years ago
What is the answer I need help bad
Thepotemich [5.8K]
Rock formed by heat and pressure
8 0
3 years ago
All of the following have an OCTET of electrons except
nordsb [41]

Answer:

full octets live in noble gas world so you need to be whatever your charge is away from there in steps on the periodic table so s-1 is the one that falls short as it is 2 moves away from Ar which is its closest Noble gas

Explanation:

6 0
3 years ago
Complete the following road map for converting volume of A to volume of B for a titration of aqueous solution A with aqueous sol
rodikova [14]

Answer:

Explanation:

The solution of known concentration is expressed as molarity. Molarity is the mole fraction of solute (i.e. the dissolved substance) per liter of the solution, Molarity is also commonly called molar concentration.

Mathematically;

\mathtt{Molarity = \dfrac{moles \ of \ solute}{ liters \ of \ solution}}

To copy and complete the road map from the given question, we have the following array:

      Volume A (L)

               ↓

d. multiplied by the molarity of A

               ↓

          moles A

               ↓

b. multiplied by the moles of B / moles of A

               ↓

         moles B

               ↓

c. divided by the molarity of B

               ↓

        volume B (L)

4 0
4 years ago
In the reaction of nitrogen gas, N2, with hydrogen gas, H2, to form ammonia gas, NH3, how many moles of hydrogen are needed to r
worty [1.4K]

Answer : The correct option is, (E) 6 moles.

Explanation : Given,

Moles of nitrogen = 2 moles

The given balanced chemical reaction is:

N_2+3H_2\rightarrow 2NH_3

From the balanced chemical reaction we conclude that,

As, 1 mole of nitrogen gas react with 3 moles of hydrogen gas

So, 2 mole of nitrogen gas react with 2\times 3=6 moles of hydrogen gas

Therefore, the number of moles of hydrogen gas needed to react with 2 moles of nitrogen gas is, 6 moles.

6 0
4 years ago
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